BotNet Systems is a start-up company that makes connectors for high-speed Internet connections. The company has budgeted variable costs of $110 for each connector and fixed costs of $6,500 per month. BotNet's static budget predicted production and sales of 100 connectors in August, but the company actually produced and sold only 79 connectors at a total cost of $28,000. BotNet's sales volume variance for total costs is O A. $2,310 F. O B. $12,810 F. OC. $12,810 U. OD. $2,310 U